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JulijaS [17]
3 years ago
9

GIVING BRAINLIEST PLEASE HELP!!

Physics
1 answer:
Degger [83]3 years ago
8 0
D. and it’s not 23 points it’s 12
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Double

Explanation:

Since the period T of a pendulum is given by

T = 2\pi \sqrt{\dfrac{l}{g}}

By increasing the length of the pendulum by 4, the period becomes

T' = 2\pi \sqrt{\dfrac{4l}{g}} = 2\left(2\pi \sqrt{\dfrac{l}{g}}\right) = 2T

You can see that the period doubles when we increase the length by a factor of 4.

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3 years ago
An Olympic high jumper, with a mass of 82 kg, has a
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A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass o
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1700 kg

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